import ResizablePanels from './ResizablePanels.vue'
import type { ResizablePanelName, DraggablePanel } from './useRunnerStyle'
import { runnerConstants } from './runner-constants'

// default values
const defaultPanel1Width = runnerConstants.defaultSpecListWidth
const defaultPanel2Width = runnerConstants.defaultReporterWidth
const defaultPanel4Width = runnerConstants.defaultStudioWidth
const minPanel1Width = 100
const minPanel2Width = 100
const minPanel3Width = 500
const minPanel4Width = runnerConstants.absoluteStudioMinimum

// helpers
const assertWidth = (panel: ResizablePanelName, width: number) => {
  cy.contains(panel).invoke('outerWidth').should('eq', width)
}

const dragHandleToClientX = (panel: DraggablePanel, x: number) => {
  cy.get(`[data-cy="${panel}ResizeHandle"]`).trigger('mousedown', { eventConstructor: 'MouseEvent' })
  .trigger('mousemove', { clientX: x })
  .trigger('mouseup', { eventConstructor: 'MouseEvent' })
}

// slot content
const slotContents = {
  panel1: () => <div class="h-full bg-emerald-100">panel1</div>,
  panel2: () => <div class="h-full bg-purple-300">panel2</div>,
  panel3: () => <div class="grow h-full bg-indigo-100">panel3</div>,
  panel4: () => <div class="h-full bg-yellow-100">panel4</div>,
}

describe('<ResizablePanels />', { viewportWidth: 1500 }, () => {
  describe('the panels resize as expected', () => {
    beforeEach(() => {
      cy.mount(() => (
        <div class="h-screen">
          <ResizablePanels
            maxTotalWidth={1500}
            v-slots={slotContents}
            initialPanel1Width={defaultPanel1Width}
            initialPanel2Width={defaultPanel2Width}
            initialPanel4Width={defaultPanel4Width}
            minPanel1Width={minPanel1Width}
            minPanel2Width={minPanel2Width}
            minPanel3Width={minPanel3Width}
            minPanel4Width={minPanel4Width}
          />
        </div>))
    })

    it('the panels can be resized', () => {
      assertWidth('panel1', defaultPanel1Width)
      dragHandleToClientX('panel1', 500)
      assertWidth('panel1', 500)
      dragHandleToClientX('panel1', 400)
      assertWidth('panel1', 400)

      assertWidth('panel2', defaultPanel2Width)
      dragHandleToClientX('panel2', 800)
      assertWidth('panel2', 400)
      dragHandleToClientX('panel2', 700)
      assertWidth('panel2', 300)
    })

    it('panel 1 can be resized between its minimum allowed width and maximum available space', () => {
      // drag panel 1 to its minimum width and attempt to go below it
      assertWidth('panel1', defaultPanel1Width)
      dragHandleToClientX('panel1', 100)
      dragHandleToClientX('panel1', 99)
      assertWidth('panel1', minPanel1Width)
      dragHandleToClientX('panel1', 50)
      assertWidth('panel1', minPanel1Width)

      // drag panel 1 to the maximum space available and attempt to go above it
      dragHandleToClientX('panel1', 550)
      dragHandleToClientX('panel1', 561)
      assertWidth('panel1', 550)
      dragHandleToClientX('panel1', 700)
      assertWidth('panel1', 550)

      // panel 2 was not reduced
      assertWidth('panel2', defaultPanel2Width)

      // panel 3 reached its minimum allowed size
      assertWidth('panel3', minPanel3Width)
    })

    it('panel 2 can be resized between its minimum allowed width and maximum available space', () => {
      // drag panel 2 to its minimum width and attempt to go below it
      assertWidth('panel2', defaultPanel2Width)
      dragHandleToClientX('panel2', 380)
      dragHandleToClientX('panel2', 279)
      assertWidth('panel2', minPanel2Width)
      dragHandleToClientX('panel2', 50)
      assertWidth('panel2', minPanel2Width)

      // drag panel 2 to the maximum space available and attempt to go above it
      dragHandleToClientX('panel2', 1000)
      dragHandleToClientX('panel2', 1001)
      assertWidth('panel2', 720)
      dragHandleToClientX('panel2', 1100)
      assertWidth('panel2', 720)

      // panel 1 was not reduced
      assertWidth('panel1', defaultPanel1Width)

      // panel 3 reached its minimum allowed size
      assertWidth('panel3', minPanel3Width)
    })
  })

  describe('when panel 4 is shown', { viewportWidth: 2000 }, () => {
    beforeEach(() => {
      cy.mount(() => (
        <div class="flex">
          <div class="h-screen">
            <ResizablePanels
              maxTotalWidth={2000}
              v-slots={slotContents}
              initialPanel1Width={defaultPanel1Width}
              initialPanel2Width={defaultPanel2Width}
              initialPanel4Width={defaultPanel4Width}
              minPanel1Width={minPanel1Width}
              minPanel2Width={minPanel2Width}
              minPanel3Width={minPanel3Width}
              minPanel4Width={minPanel4Width}
              showPanel4={true}
            />
          </div></div>))
    })

    it('the panels can be resized', () => {
      assertWidth('panel1', defaultPanel1Width)
      dragHandleToClientX('panel1', 500)
      assertWidth('panel1', 500)
      dragHandleToClientX('panel1', 400)
      assertWidth('panel1', 400)

      assertWidth('panel2', defaultPanel2Width)
      dragHandleToClientX('panel2', 800)
      assertWidth('panel2', 400)
      dragHandleToClientX('panel2', 700)
      assertWidth('panel2', 300)

      assertWidth('panel4', defaultPanel4Width)
      dragHandleToClientX('panel4', 1300)
      assertWidth('panel4', 700)
      dragHandleToClientX('panel4', 1500)
      assertWidth('panel4', 500)
    })

    it('panel 1 can be resized between its minimum allowed width and maximum available space', () => {
      // drag panel 1 to its minimum width and attempt to go below it
      assertWidth('panel1', defaultPanel1Width)
      dragHandleToClientX('panel1', 100)
      dragHandleToClientX('panel1', 99)
      assertWidth('panel1', minPanel1Width)
      dragHandleToClientX('panel1', 50)
      assertWidth('panel1', minPanel1Width)

      // drag panel 1 to the maximum space available and attempt to go above it
      dragHandleToClientX('panel1', 710)
      dragHandleToClientX('panel1', 800)
      assertWidth('panel1', 710)
      dragHandleToClientX('panel1', 900)
      assertWidth('panel1', 710)

      // panel 2 was not reduced
      assertWidth('panel2', defaultPanel2Width)

      // panel 3 reached its minimum allowed size
      assertWidth('panel3', 500)

      // panel 4 was not reduced
      assertWidth('panel4', defaultPanel4Width)
    })

    it('panel 2 can be resized between its minimum allowed width and maximum available space', () => {
      // drag panel 2 to its minimum width and attempt to go below it
      assertWidth('panel2', defaultPanel2Width)
      dragHandleToClientX('panel2', 380)
      dragHandleToClientX('panel2', 200)
      assertWidth('panel2', minPanel2Width)
      dragHandleToClientX('panel2', 180)
      assertWidth('panel2', minPanel2Width)

      // drag panel 2 to the maximum space available and attempt to go above it
      dragHandleToClientX('panel2', 1160)
      dragHandleToClientX('panel2', 1200)
      assertWidth('panel2', 880)
      dragHandleToClientX('panel2', 1300)
      assertWidth('panel2', 880)

      // panel 1 was not reduced
      assertWidth('panel1', defaultPanel1Width)

      // panel 3 reached its minimum allowed size
      assertWidth('panel3', minPanel3Width)

      // panel 4 was not reduced
      assertWidth('panel4', defaultPanel4Width)
    })

    it('panel 4 can be resized between its minimum allowed width and maximum available space', () => {
      // since its starting width is the same as its minimum width,
      // drag panel 4 to a different width, then drag it to its minimum width and attempt to go below it
      assertWidth('panel4', defaultPanel4Width)
      dragHandleToClientX('panel4', 1400)
      assertWidth('panel4', 600)
      dragHandleToClientX('panel4', 1660)
      assertWidth('panel4', minPanel4Width)
      dragHandleToClientX('panel4', 1800)
      assertWidth('panel4', minPanel4Width)
      dragHandleToClientX('panel4', 1900)
      assertWidth('panel4', minPanel4Width)

      // drag panel 4 to the maximum space available and attempt to go above it
      dragHandleToClientX('panel4', 1230)
      dragHandleToClientX('panel4', 1100)
      assertWidth('panel4', 770)
      dragHandleToClientX('panel4', 900)
      assertWidth('panel4', 770)

      // panel 1 was not reduced
      assertWidth('panel1', defaultPanel1Width)

      // panel 2 was not reduced
      assertWidth('panel2', defaultPanel2Width)

      // panel 3 reached its absolute minimum allowed size
      assertWidth('panel3', minPanel3Width)
    })
  })

  describe('when there is a side nav', () => {
    it('handles being offset by some distance on the left', () => {
      cy.mount(() => (
        <div class="flex">
          <div class='bg-green-600 text-white w-[100px]'> 100px wide sidebar</div>
          <div class="grow h-screen">
            <ResizablePanels
              maxTotalWidth={1500}
              v-slots={slotContents}
              offsetLeft={100}
            />
          </div>
        </div>))

      assertWidth('panel1', defaultPanel1Width)
      assertWidth('panel2', defaultPanel2Width)
      dragHandleToClientX('panel1', 400)
      assertWidth('panel1', 300)
      dragHandleToClientX('panel1', 300)
      assertWidth('panel1', 200)

      dragHandleToClientX('panel2', 600)
      assertWidth('panel2', 300)
      dragHandleToClientX('panel2', 590)
      assertWidth('panel2', 290)
    })
  })

  describe('when panels are hidden', () => {
    it('panel 1 can be hidden with a prop', () => {
      cy.mount(() => (
        <div class="h-screen">
          <ResizablePanels
            maxTotalWidth={1500}
            v-slots={slotContents}
            showPanel1={false}
          />
        </div>))

      cy.contains('panel1').should('not.be.visible')
      assertWidth('panel2', defaultPanel2Width)
      dragHandleToClientX('panel2', 1000)
      assertWidth('panel2', 1000)
      assertWidth('panel3', 500)
    })

    it('panel 2 can be hidden with a prop', () => {
      cy.mount(() => (
        <div class="h-screen">
          <ResizablePanels
            maxTotalWidth={1500}
            v-slots={slotContents}
            showPanel2={false}
          />
        </div>))

      cy.contains('panel2').should('not.be.visible')
      assertWidth('panel1', defaultPanel1Width)
      dragHandleToClientX('panel1', 950)
      dragHandleToClientX('panel1', 955)
      assertWidth('panel1', 950)
      assertWidth('panel3', 550)
    })

    it('Panel 3 resizes correctly when all panels are hidden', () => {
      cy.mount(() => (
        <div class="h-screen">
          <ResizablePanels
            maxTotalWidth={1500}
            v-slots={slotContents}
            showPanel1={false}
            showPanel2={false}
          />
        </div>))

      cy.contains('panel1').should('not.be.visible')
      cy.contains('panel2').should('not.be.visible')
      assertWidth('panel3', 1500)
    })

    it('Panel 3 resizes correctly when panels 1 and 2 are hidden and panel 4 is shown', () => {
      cy.mount(() => (
        <div class="h-screen">
          <ResizablePanels
            maxTotalWidth={1500}
            v-slots={slotContents}
            showPanel1={false}
            showPanel2={false}
            showPanel4={true}
          />
        </div>))

      cy.contains('panel1').should('not.be.visible')
      cy.contains('panel2').should('not.be.visible')
      cy.contains('panel4').should('be.visible')
      assertWidth('panel3', 1160)
    })
  })
})
